Baron d'Hautrec's heirs were obliged to benefit by this great advertisement. They arranged an exhibition of the furniture and personal effects in the Avenue Henri-Martin, in the house itself, on the scene of the crime, prior to the sale at the Salle Drouot. The furniture was modern and in indifferent taste, the knicknacks had no artistic value ... but, in the middle of the bedroom, on a stand covered with ruby velvet, the ring with the blue diamond sparkled under a glass shade, closely watched by two detectives.
It was a magnificent diamond of enormous size and incomparable purity and of that undefined blue which clear water takes from the sky which it reflects, the blue which we can just suspect in newly-washed linen. People admired it, went into raptures over it ... and cast terrified glances round the victim's room, at the spot where the corpse had lain, at the floor stripped of its blood-stained carpet and especially at the walls, those solid walls through which the criminal had passed. They felt to make sure that the marble chimney-piece did not swing on a pivot, that there was no secret spring in the mouldings of the mirrors. They pictured yawning cavities, tunnels communicating with the sewers, with the catacombs....
The blue diamond was sold at the Hôtel Drouot on the thirtieth of January. The auction-room was crammed and the bidding proceeded madly.
All Paris, the Paris of the first nights and great public functions, was there, all those who buy and all those who like others to think that they are in a position to buy: stockbrokers, artists, ladies in every class of society, two members of the Government, an Italian tenor, a king in exile who, in order to reëstablish his credit, with great self-possession and in a resounding voice, permitted himself the luxury of running up the price to a hundred thousand francs. A hundred thousand francs! His Majesty was quite safe in making the bid. The Italian tenor was soon offering a hundred and fifty thousand, an actress at the Français a hundred and seventy-five.
At two hundred thousand francs, however, the competition became less brisk. At two hundred and fifty thousand, only two bidders remained: Herschmann, the financial magnate, known as the Gold-mine King; and a wealthy American lady, the Comtesse de Crozon, whose collection of diamonds and other precious stones enjoys a world-wide fame.
"Two hundred and sixty thousand ... two hundred and seventy thousand ... seventy-five ... eighty," said the auctioneer, with a questioning glance at either competitor in turn. "Two hundred and eighty thousand for madame.... No advance on two hundred and eighty thousand...?"
"Three hundred thousand," muttered Herschmann.
A pause followed. All eyes were turned on the Comtesse de Crozon. Smiling, but with a pallor that betrayed her excitement, she stood leaning over the back of the chair before her. In reality, she knew and everybody present knew that there was no doubt about the finish of the duel: it was logically and fatally bound to end in favour of the financier, whose whims were served by a fortune of over five hundred millions. Nevertheless, she said:
"Three hundred and five thousand."